Improved composition for preserving timber and wood



- gen 13.77.

(Etched fitatea pamaam.

EDWARD JOSEPH DE SMEDT, 013 NEW YORK, NY, Assieuon TO NEW YORK IM- PROVED ANTHRAOITE-GOAL COMPANY, on SAME PLACE.

3 Letters Patent No. 100,608, dated March 8, 1870.

IMPROVBID COMPOSITION FOR PRESER'VING- TIMBER AND WOOD.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that], EDWARD J osumi DE SMEDT, of the city, county, and State of New York, have invented a new'and improved Composition for Preserw ing Timber and Wood generally; and I do hereby declare that the following is a full, clear, and exact description' of the same. 7

-The ingredients I employ for this purpose consist, first, of the substance known generally as Ritchie mineral, and also .Albertite, either or both being used, as chemically they are nearly the same, both being asphalts-or bituminous, and composed principally'of asphaltine and bitumen. The following formula, as given by Raignault, a French chemist, will technically 6.\'-. press their nature:

Ritchie mineral, carbon 78.22; hydrogen 8.01; oxy- Albertite, carbon 86.12; hydrogen 9.87 oxygen 4.91. p

The second substance employed is impure naphthaline dead oil; the third, impure benzole; and, fourth, pine or North Carolina tar.

Theltitchie mineral or Albertite is first dissolved by heatin the impure naphthaline dead oil and pinei tar, the impure bcnzole then added, and all well mixed together, forming quite a fluid solution.

The proportion of the several ingredients is about 7 as follows:

To the Ritchie mineral or Albertite, from five hundred to one thousand pounds, add impure naphthaline dead oil, fifteen hundred pounds; impure benzole, fifteen hundred pounds; pine or North Carolina tar, four hundred pounds.

The timber or wood may be saturated with the'solution or composition in any proper manner. The most practicable way would probably be to put the timber or wood in a retort,exhaust the air therefrom,

and then inject the solution, by means of a force-pump, into the retort under a pressure of from one to two hundred pounds to the square inch. I do not, however, confine myself to any particular means for saturating the timber or'wood. V I

I claim as new, and desire to secure by Letters Patent The composition composed of the ingredients specified, or their chemical equivalents, and about in the proportions set forth, for the purpose of saturating timber and wood generally, to preserve the same, or enable it to resist decay, substantially as described.

Theabove specification of my invention signed by me this 2d day of February, 1870..

E. J. DE SMEDT.

Witnesses A. R. HAIGHT, h-rAs. Sonaxn. 

